Dillard was 12 of 18 from the field and had three 3-pointers, including one with 53 seconds to play. He also had a team-high five rebounds.
Dennis Ogbe added 11 points for the Golden Eagles (7-9, 1-3 Ohio Valley). Jeremiah Samarrippas had eight assists.
Eastern Illinois led 44-40 at halftime and stayed out front until Dillard hit a 3-pointer, putting Tennessee Tech up by two with 53 seconds remaining. Sherman Blanford made a layup to tie the game at 73, but Dillard scored again and Matt Marseille hit a pair of free throws to seal the win.
Morris Woods led Eastern Illinois with 25 points and seven rebounds. Blanford added 18 points for the Panthers (3-14, 0-4).
Eastern Illinois has lost 10 consecutive games.
